Steering Wheel Position Sensor Circuit Range/Performance Problem
The steering wheel position sensor circuit is out of range or malfunctioning.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The steering wheel position sensor tracks how much you turn the wheel and sends that info to the computer. If it's out of whack, the car can't tell how you're steering properly.
What the computer is actually seeing
The computer expects the steering sensor voltage to change smoothly as you turn the wheel. It looks for a voltage range typically between 0.5V and 4.5V, depending on the position.
What a healthy reading looks like
0.5V to 4.5V as you turn the wheel from full left to full right.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check wiring and connectors at the steering wheel position sensor for damage or corrosion. Repair as needed.
- 22. Measure the voltage at the sensor connector. Check for 0.5V to 4.5V range as you turn the wheel. If out of range, go to step 3.
- 33. Inspect the sensor itself for any physical damage. If damaged, replace the sensor and recheck.
- 44. If voltage is within range but the code persists, check for software updates or calibration procedures for the sensor.
Common causes
- Wiring/connector issues in the steering column
- Failed steering wheel position sensor
- Calibration issue with the sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; the vehicle might have reduced steering assist, but it's usually drivable. Fix soon.
Will this code come back after I fix it?
If the wiring and sensor are repaired correctly, the code should not return.
Why does this code appear with others like C0076?
These codes are often related; C0076 involves steering angle measurement inconsistencies which can affect the performance of the C0079.
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